Mercurial > hg > orthanc-webviewer
annotate WebApplication/viewer.js @ 138:cba2a83bd198
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 28 Jun 2016 11:07:09 +0200 |
| parents | f99adade8b77 |
| children | 5dc54316d68b |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 122 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 0 | 4 * Department, University Hospital of Liege, Belgium |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Affero General Public License | |
| 8 * as published by the Free Software Foundation, either version 3 of | |
| 9 * the License, or (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Affero General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Affero General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
|
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21 // Set the default compression |
| 0 | 22 var compression = 'jpeg95'; |
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23 //var compression = 'deflate'; |
| 0 | 24 |
| 25 | |
| 26 // Prevent the access to IE | |
| 27 if(navigator.appVersion.indexOf("MSIE ") != -1) | |
| 28 { | |
| 29 alert("Please use Mozilla Firefox or Google Chrome. Microsoft Internet Explorer is not supported."); | |
| 30 } | |
| 31 | |
| 32 | |
| 33 function ResizeCornerstone() | |
| 34 { | |
| 35 $('#dicomImage').height($(window).height() - $('#slider').parent().height()); | |
| 36 var element = $('#dicomImage').get(0); | |
| 37 cornerstone.resize(element, true); | |
| 38 } | |
| 39 | |
| 40 | |
| 41 function SetWindowing(center, width) | |
| 42 { | |
| 43 var element = $('#dicomImage').get(0); | |
| 44 var viewport = cornerstone.getViewport(element); | |
| 45 viewport.voi.windowCenter = center; | |
| 46 viewport.voi.windowWidth = width; | |
| 47 cornerstone.setViewport(element, viewport); | |
| 48 UpdateViewportInformation(); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 function SetFullWindowing() | |
| 53 { | |
| 54 var element = $('#dicomImage').get(0); | |
| 55 var viewport = cornerstone.getViewport(element); | |
| 56 var image = cornerstone.getEnabledElement(element).image; | |
| 57 | |
| 58 if (image.color) { | |
| 59 // Ignore color images | |
| 60 return; | |
| 61 } | |
| 62 | |
| 63 var minValue = image.minPixelValue; | |
| 64 var maxValue = image.maxPixelValue; | |
| 65 if (minValue == undefined || | |
| 66 maxValue == undefined || | |
| 67 minValue == maxValue) { | |
| 68 return; | |
| 69 } | |
| 70 | |
| 71 if (image.slope != undefined && | |
| 72 image.intercept != undefined) { | |
| 73 minValue = minValue * image.slope + image.intercept; | |
| 74 maxValue = maxValue * image.slope + image.intercept; | |
| 75 } | |
| 76 | |
| 77 viewport.voi.windowCenter = (minValue + maxValue) / 2.0; | |
| 78 viewport.voi.windowWidth = (maxValue - minValue) / 2.0; | |
| 79 cornerstone.setViewport(element, viewport); | |
| 80 UpdateViewportInformation(); | |
| 81 } | |
| 82 | |
| 83 | |
| 84 function SetDefaultWindowing() | |
| 85 { | |
| 86 var element = $('#dicomImage').get(0); | |
| 87 var viewport = cornerstone.getViewport(element); | |
| 88 var image = cornerstone.getEnabledElement(element).image; | |
| 89 | |
| 90 viewport.voi.windowCenter = image.windowCenter; | |
| 91 viewport.voi.windowWidth = image.windowWidth; | |
| 92 cornerstone.setViewport(element, viewport); | |
| 93 UpdateViewportInformation(); | |
| 94 } | |
| 95 | |
| 96 | |
| 97 function SetBoneWindowing() | |
| 98 { | |
| 99 SetWindowing(300, 2000); | |
| 100 } | |
| 101 | |
| 102 | |
| 103 function SetLungWindowing() | |
| 104 { | |
| 105 SetWindowing(-600, 1600); | |
| 106 } | |
| 107 | |
| 108 | |
| 109 function UpdateViewportInformation() | |
| 110 { | |
| 111 var element = $('#dicomImage').get(0); | |
| 112 var viewport = cornerstone.getViewport(element); | |
| 113 | |
| 114 $('#bottomleft').text('WW/WL:' + Math.round(viewport.voi.windowWidth) + '/' + Math.round(viewport.voi.windowCenter)); | |
| 115 $('#bottomright').text('Zoom: ' + viewport.scale.toFixed(2) + 'x'); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 function ToggleSeriesInformation() | |
| 120 { | |
| 121 $('#topright').toggle(); | |
| 122 } | |
| 123 | |
| 124 | |
| 125 function ToggleInterpolation() | |
| 126 { | |
| 127 var element = $('#dicomImage').get(0); | |
| 128 var viewport = cornerstone.getViewport(element); | |
| 129 if (viewport.pixelReplication === true) { | |
| 130 viewport.pixelReplication = false; | |
| 131 } else { | |
| 132 viewport.pixelReplication = true; | |
| 133 } | |
| 134 cornerstone.setViewport(element, viewport); | |
| 135 } | |
| 136 | |
| 137 | |
| 138 function ToggleInversion() | |
| 139 { | |
| 140 var element = $('#dicomImage').get(0); | |
| 141 var viewport = cornerstone.getViewport(element); | |
| 142 if (viewport.invert === true) { | |
| 143 viewport.invert = false; | |
| 144 } else { | |
| 145 viewport.invert = true; | |
| 146 } | |
| 147 cornerstone.setViewport(element, viewport); | |
| 148 } | |
| 149 | |
| 150 | |
| 151 function DownloadInstance(instance) | |
| 152 { | |
| 153 // http://stackoverflow.com/a/3749395/881731 | |
| 154 var hiddenIFrameID = 'hiddenDownloader', | |
| 155 iframe = document.getElementById(hiddenIFrameID); | |
| 156 if (iframe === null) { | |
| 157 iframe = document.createElement('iframe'); | |
| 158 iframe.id = hiddenIFrameID; | |
| 159 iframe.style.display = 'none'; | |
| 160 document.body.appendChild(iframe); | |
| 161 } | |
| 162 iframe.src = '../../instances/' + instance + '/file'; | |
| 163 } | |
| 164 | |
| 165 | |
| 166 function AdjustZoom() | |
| 167 { | |
| 168 var element = $('#dicomImage').get(0); | |
| 169 cornerstone.fitToWindow(element); | |
| 170 } | |
| 171 | |
| 172 | |
| 173 function ZoomIn() | |
| 174 { | |
| 175 var element = $('#dicomImage').get(0); | |
| 176 var viewport = cornerstone.getViewport(element); | |
| 177 viewport.scale /= 0.5; | |
| 178 cornerstone.setViewport(element, viewport); | |
| 179 UpdateViewportInformation(); | |
| 180 } | |
| 181 | |
| 182 | |
| 183 function ZoomOut() | |
| 184 { | |
| 185 var element = $('#dicomImage').get(0); | |
| 186 var viewport = cornerstone.getViewport(element); | |
| 187 viewport.scale *= 0.5; | |
| 188 cornerstone.setViewport(element, viewport); | |
| 189 UpdateViewportInformation(); | |
| 190 } | |
| 191 | |
| 192 | |
| 193 | |
| 194 (function (cornerstone) { | |
| 195 'use strict'; | |
| 196 | |
| 197 function PrintRange(pixels) | |
| 198 { | |
| 199 var a = Infinity; | |
| 200 var b = -Infinity; | |
| 201 | |
| 202 for (var i = 0, length = pixels.length; i < length; i++) { | |
| 203 if (pixels[i] < a) | |
| 204 a = pixels[i]; | |
| 205 if (pixels[i] > b) | |
| 206 b = pixels[i]; | |
| 207 } | |
| 208 | |
| 209 console.log(a + ' ' + b); | |
| 210 } | |
| 211 | |
| 212 function ChangeDynamics(pixels, source1, target1, source2, target2) | |
| 213 { | |
| 214 var scale = (target2 - target1) / (source2 - source1); | |
| 215 var offset = (target1) - scale * source1; | |
| 216 | |
| 217 for (var i = 0, length = pixels.length; i < length; i++) { | |
| 218 pixels[i] = scale * pixels[i] + offset; | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 | |
| 223 function getPixelDataDeflate(image) { | |
| 224 // Decompresses the base64 buffer that was compressed with Deflate | |
| 225 var s = pako.inflate(window.atob(image.Orthanc.PixelData)); | |
| 226 var pixels = null; | |
| 227 | |
| 228 if (image.color) { | |
| 229 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
| 230 pixels = new Uint8Array(buf); | |
| 231 var index = 0; | |
| 232 for (var i = 0, length = s.length; i < length; i += 3) { | |
| 233 pixels[index++] = s[i]; | |
| 234 pixels[index++] = s[i + 1]; | |
| 235 pixels[index++] = s[i + 2]; | |
| 236 pixels[index++] = 255; // Alpha channel | |
| 237 } | |
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238 } else{ |
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239 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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240 |
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241 if (image.Orthanc.IsSigned) { |
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242 pixels = new Int16Array(buf); |
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243 } else { |
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244 pixels = new Uint16Array(buf); |
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245 } |
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246 |
| 0 | 247 var index = 0; |
| 248 for (var i = 0, length = s.length; i < length; i += 2) { | |
| 249 var lower = s[i]; | |
| 250 var upper = s[i + 1]; | |
| 251 pixels[index] = lower + upper * 256; | |
| 252 index++; | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 return pixels; | |
| 257 } | |
| 258 | |
| 259 | |
| 260 // http://stackoverflow.com/a/11058858/881731 | |
| 261 function str2ab(str) { | |
| 262 var buf = new ArrayBuffer(str.length); | |
| 263 var pixels = new Uint8Array(buf); | |
| 264 for (var i = 0, strLen=str.length; i<strLen; i++) { | |
| 265 pixels[i] = str.charCodeAt(i); | |
| 266 } | |
| 267 return pixels; | |
| 268 } | |
| 269 | |
| 270 function getPixelDataJpeg(image) { | |
| 271 var jpegReader = new JpegImage(); | |
| 272 var jpeg = str2ab(window.atob(image.Orthanc.PixelData)); | |
| 273 jpegReader.parse(jpeg); | |
| 274 var s = jpegReader.getData(image.width, image.height); | |
| 275 var pixels = null; | |
| 276 | |
| 277 if (image.color) { | |
| 278 var buf = new ArrayBuffer(s.length / 3 * 4); // RGB32 | |
| 279 pixels = new Uint8Array(buf); | |
| 280 var index = 0; | |
| 281 for (var i = 0, length = s.length; i < length; i += 3) { | |
| 282 pixels[index++] = s[i]; | |
| 283 pixels[index++] = s[i + 1]; | |
| 284 pixels[index++] = s[i + 2]; | |
| 285 pixels[index++] = 255; // Alpha channel | |
| 286 } | |
| 287 } else { | |
|
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288 var buf = new ArrayBuffer(s.length * 2); // uint16_t or int16_t |
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289 |
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290 if (image.Orthanc.IsSigned) { |
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291 pixels = new Int16Array(buf); |
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292 } else { |
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293 pixels = new Uint16Array(buf); |
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294 } |
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295 |
| 0 | 296 var index = 0; |
| 297 for (var i = 0, length = s.length; i < length; i++) { | |
| 298 pixels[index] = s[i]; | |
| 299 index++; | |
| 300 } | |
| 301 | |
| 302 if (image.Orthanc.Stretched) { | |
| 303 ChangeDynamics(pixels, 0, image.Orthanc.StretchLow, 255, image.Orthanc.StretchHigh); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 return pixels; | |
| 308 } | |
| 309 | |
| 310 | |
| 311 function getOrthancImage(imageId) { | |
| 312 var result = null; | |
| 313 | |
| 314 $.ajax({ | |
| 315 type: 'GET', | |
| 316 url: '../instances/' + compression + '-' + imageId, | |
| 317 dataType: 'json', | |
| 318 cache: true, | |
| 319 async: false, | |
| 320 success: function(image) { | |
| 321 image.imageId = imageId; | |
| 322 if (image.color) | |
| 323 image.render = cornerstone.renderColorImage; | |
| 324 else | |
| 325 image.render = cornerstone.renderGrayscaleImage; | |
| 326 | |
| 327 image.getPixelData = function() { | |
| 328 if (image.Orthanc.Compression == 'Deflate') | |
| 329 return getPixelDataDeflate(this); | |
| 330 | |
| 331 if (image.Orthanc.Compression == 'Jpeg') | |
| 332 return getPixelDataJpeg(this); | |
| 333 | |
| 334 // Unknown compression | |
| 335 return null; | |
| 336 } | |
| 337 | |
| 338 result = image; | |
| 339 }, | |
| 340 error: function() { | |
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341 alert('Error: This image is not supported by the Web viewer.'); |
| 0 | 342 return null; |
| 343 } | |
| 344 }); | |
| 345 | |
| 346 var deferred = $.Deferred(); | |
| 347 deferred.resolve(result); | |
| 348 return deferred; | |
| 349 } | |
| 350 | |
| 351 // register our imageLoader plugin with cornerstone | |
| 352 cornerstone.registerImageLoader('', getOrthancImage); | |
| 353 | |
| 354 }(cornerstone)); | |
| 355 | |
| 356 | |
| 357 $(document).ready(function() { | |
| 358 $('#open-toolbar').button({ | |
| 359 icons: { primary: 'ui-icon-custom-orthanc' }, | |
| 360 text: false | |
| 361 }); | |
| 362 | |
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363 $('#unstable').tooltip(); |
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364 |
| 0 | 365 var series = window.url('?series', window.location.search); |
| 366 if (series == null) | |
| 367 return; | |
| 368 | |
| 369 console.log('Displaying series: ' + series); | |
| 370 var instances = [ ]; | |
| 371 | |
| 372 $.ajax({ | |
| 373 type: 'GET', | |
| 374 url: '../series/' + series, | |
| 375 dataType: 'json', | |
| 376 cache: false, | |
| 377 async: false, | |
| 378 success: function(volume) { | |
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379 if (volume.Slices.length != 0) { |
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380 instances = volume.Slices; |
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381 $('#topright').html(volume.PatientID + '<br/>' + |
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382 volume.PatientName + '<br/>' + |
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383 volume.StudyDescription + '<br/>' + |
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384 volume.SeriesDescription + '<br/>'); |
| 0 | 385 } |
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386 }, |
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387 failure: function() { |
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388 alert('Error: This image is not supported by the Web viewer.'); |
| 0 | 389 } |
| 390 }); | |
| 391 | |
| 392 if (instances.length == 0) | |
| 393 { | |
| 394 console.log('No image in this series'); | |
| 395 return; | |
| 396 } | |
| 397 | |
| 398 | |
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399 $.ajax({ |
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400 type: 'GET', |
| 19 | 401 url: '../is-stable-series/' + series, |
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402 dataType: 'json', |
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403 cache: false, |
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404 async: true, |
| 19 | 405 success: function(stable) { |
| 406 if (!stable) { | |
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407 $('#unstable').show(); |
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408 } |
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409 } |
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410 }); |
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411 |
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412 |
| 0 | 413 var currentImageIndex = 0; |
| 414 | |
| 415 // updates the image display | |
| 416 function updateTheImage(imageIndex) { | |
| 417 return cornerstone.loadAndCacheImage(instances[imageIndex]).then(function(image) { | |
| 418 currentImageIndex = imageIndex; | |
| 419 var viewport = cornerstone.getViewport(element); | |
| 420 cornerstone.displayImage(element, image, viewport); | |
| 421 }); | |
| 422 } | |
| 423 | |
| 424 // image enable the element | |
| 425 var element = $('#dicomImage').get(0); | |
| 426 cornerstone.enable(element); | |
| 427 | |
| 428 // set event handlers | |
| 429 /*function onImageRendered(e, eventData) { | |
| 430 $('#topright').text('Render Time:' + eventData.renderTimeInMs + ' ms'); | |
| 431 } | |
| 432 $(element).on('CornerstoneImageRendered', onImageRendered);*/ | |
| 433 | |
| 434 // load and display the image | |
| 435 var imagePromise = updateTheImage(0); | |
| 436 | |
| 437 // add handlers for mouse events once the image is loaded. | |
| 438 imagePromise.then(function() { | |
| 439 viewport = cornerstone.getViewport(element); | |
| 440 UpdateViewportInformation(); | |
| 441 | |
| 442 // add event handlers to pan image on mouse move | |
| 443 $('#dicomImage').mousedown(function (e) { | |
| 444 var lastX = e.pageX; | |
| 445 var lastY = e.pageY; | |
| 446 var mouseButton = e.which; | |
| 447 | |
| 448 $(toolbar).hide(); | |
| 449 | |
| 450 $(document).mousemove(function (e) { | |
| 451 var deltaX = e.pageX - lastX, | |
| 452 deltaY = e.pageY - lastY; | |
| 453 lastX = e.pageX; | |
| 454 lastY = e.pageY; | |
| 455 | |
| 456 if (mouseButton == 1) { | |
| 457 var viewport = cornerstone.getViewport(element); | |
| 458 viewport.voi.windowWidth += (deltaX / viewport.scale); | |
| 459 viewport.voi.windowCenter += (deltaY / viewport.scale); | |
| 460 cornerstone.setViewport(element, viewport); | |
| 461 UpdateViewportInformation(); | |
| 462 } | |
| 463 else if (mouseButton == 2) { | |
| 464 var viewport = cornerstone.getViewport(element); | |
| 465 viewport.translation.x += (deltaX / viewport.scale); | |
| 466 viewport.translation.y += (deltaY / viewport.scale); | |
| 467 cornerstone.setViewport(element, viewport); | |
| 468 } | |
| 469 else if (mouseButton == 3) { | |
| 470 var viewport = cornerstone.getViewport(element); | |
| 471 viewport.scale += (deltaY / 100); | |
| 472 cornerstone.setViewport(element, viewport); | |
| 473 UpdateViewportInformation(); | |
| 474 } | |
| 475 }); | |
| 476 | |
| 477 $(document).mouseup(function (e) { | |
| 478 $(document).unbind('mousemove'); | |
| 479 $(document).unbind('mouseup'); | |
| 480 }); | |
| 481 }); | |
| 482 | |
| 483 $('#dicomImage').on('mousewheel DOMMouseScroll', function (e) { | |
| 484 // Firefox e.originalEvent.detail > 0 scroll back, < 0 scroll forward | |
| 485 // chrome/safari e.originalEvent.wheelDelta < 0 scroll back, > 0 scroll forward | |
| 486 if (e.originalEvent.wheelDelta < 0 || e.originalEvent.detail > 0) { | |
| 487 currentImageIndex ++; | |
| 488 if (currentImageIndex >= instances.length) { | |
| 489 currentImageIndex = instances.length - 1; | |
| 490 } | |
| 491 } else { | |
| 492 currentImageIndex --; | |
| 493 if (currentImageIndex < 0) { | |
| 494 currentImageIndex = 0; | |
| 495 } | |
| 496 } | |
| 497 | |
| 498 updateTheImage(currentImageIndex); | |
| 499 $('#slider').slider("option", "value", currentImageIndex); | |
| 500 | |
| 501 //prevent page fom scrolling | |
| 502 return false; | |
| 503 }); | |
| 504 }); | |
| 505 | |
| 506 | |
| 507 $('#slider').slider({ | |
| 508 min: 0, | |
| 509 max: instances.length - 1, | |
| 510 slide: function(event, ui) { | |
| 511 updateTheImage(ui.value); | |
| 512 } | |
| 513 }); | |
| 514 | |
| 515 var toolbar = $.jsPanel({ | |
| 516 position: { top: 50, left: 10 }, | |
| 517 size: { width: 155, height: 200 }, | |
| 518 content: $('#toolbar-content').clone().show(), | |
| 519 controls: { buttons: 'none' }, | |
| 520 title: '<a target="_blank" href="http://www.orthanc-server.com/"><img src="images/orthanc-logo.png" /></a>' | |
| 521 }); | |
| 522 | |
| 523 $('#open-toolbar').click(function() { | |
| 524 toolbar.toggle(); | |
| 525 }); | |
| 526 | |
| 527 $(toolbar).hide(); | |
| 528 | |
| 529 $('.toolbar-view', toolbar).buttonset() | |
| 530 .children().first().button({ | |
| 531 icons: { primary: 'ui-icon-info' }, | |
| 532 text: false | |
| 533 }).click(ToggleSeriesInformation).next().button({ | |
| 534 icons: { primary: 'ui-icon-custom-inversion' }, | |
| 535 text: false | |
| 536 }).click(ToggleInversion).next().button({ | |
| 537 icons: { primary: 'ui-icon-custom-interpolation' }, | |
| 538 text: false | |
| 539 }).click(ToggleInterpolation).next().button({ | |
| 540 icons: { primary: 'ui-icon-circle-triangle-s' }, | |
| 541 text: false | |
| 542 }).click(function() { | |
| 543 DownloadInstance(instances[currentImageIndex]); | |
| 544 }); | |
| 545 | |
| 546 $('.toolbar-zoom', toolbar).buttonset() | |
| 547 .children().first().button({ | |
| 548 icons: { primary: 'ui-icon-image' }, | |
| 549 text: false | |
| 550 }).click(AdjustZoom).next().button({ | |
| 551 icons: { primary: 'ui-icon-zoomin' }, | |
| 552 text: false | |
| 553 }).click(ZoomIn).next().button({ | |
| 554 icons: { primary: 'ui-icon-zoomout' }, | |
| 555 text: false | |
| 556 }).click(ZoomOut); | |
| 557 | |
| 558 $('.toolbar-windowing', toolbar).buttonset() | |
| 559 .children().first().button({ | |
| 560 icons: { primary: 'ui-icon-custom-default' }, | |
| 561 text: false | |
| 562 }).click(SetDefaultWindowing).next().button({ | |
| 563 icons: { primary: 'ui-icon-custom-stretch' }, | |
| 564 text: false | |
| 565 }).click(SetFullWindowing).next().button({ | |
| 566 icons: { primary: 'ui-icon-custom-lung' }, | |
| 567 text: false | |
| 568 }).click(SetLungWindowing).next().button({ | |
| 569 icons: { primary: 'ui-icon-custom-bone' }, | |
| 570 text: false | |
| 571 }).click(SetBoneWindowing); | |
| 572 | |
| 573 | |
| 574 function SetCompression(c) | |
| 575 { | |
| 576 compression = c; | |
| 577 cornerstone.imageCache.purgeCache(); | |
| 578 updateTheImage(currentImageIndex); | |
| 579 cornerstone.invalidateImageId(instances[currentImageIndex]); | |
| 580 } | |
| 581 | |
| 582 $('.toolbar-quality', toolbar).buttonset() | |
| 583 .children().first().button({ | |
| 584 label: 'L' | |
| 585 }).click(function() { | |
| 586 SetCompression('jpeg80'); | |
| 587 }).next().button({ | |
| 588 label: 'M' | |
| 589 }).click(function() { | |
| 590 SetCompression('jpeg95'); | |
| 591 }).next().button({ | |
| 592 label: 'H' | |
| 593 }).click(function() { | |
| 594 SetCompression('deflate'); | |
| 595 }); | |
| 596 | |
| 597 | |
| 598 ResizeCornerstone(); | |
| 599 $(window).resize(function(e) { | |
| 600 if (!$(e.target).hasClass('jsPanel')) // Ignore toolbar resizing | |
| 601 { | |
| 602 ResizeCornerstone(); | |
| 603 } | |
| 604 }); | |
| 605 | |
| 606 }); |